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contextmanager decorators require Generators #2773

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contextmanager decorators require Generators #2773

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10 changes: 5 additions & 5 deletions stdlib/2and3/contextlib.pyi
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
# Stubs for contextlib

from typing import (
Any, Callable, Generator, IO, Iterable, Iterator, Optional, Type,
Any, Callable, Generator, IO, Iterable, Optional, Type,
Generic, TypeVar, overload
)
from types import TracebackType
Expand All @@ -10,7 +10,7 @@ import sys
from typing import ContextManager as ContextManager

if sys.version_info >= (3, 5):
from typing import AsyncContextManager, AsyncIterator
from typing import AsyncContextManager, AsyncGenerator

if sys.version_info >= (3, 6):
from typing import ContextManager as AbstractContextManager
Expand All @@ -27,12 +27,12 @@ _CM_EF = TypeVar('_CM_EF', ContextManager, _ExitFunc)
if sys.version_info >= (3, 2):
class GeneratorContextManager(ContextManager[_T], Generic[_T]):
def __call__(self, func: Callable[..., _T]) -> Callable[..., _T]: ...
def contextmanager(func: Callable[..., Iterator[_T]]) -> Callable[..., GeneratorContextManager[_T]]: ...
def contextmanager(func: Callable[..., Generator[_T, Any, Any]]) -> Callable[..., GeneratorContextManager[_T]]: ...
else:
def contextmanager(func: Callable[..., Iterator[_T]]) -> Callable[..., ContextManager[_T]]: ...
def contextmanager(func: Callable[..., Generator[_T, Any, Any]]) -> Callable[..., ContextManager[_T]]: ...

if sys.version_info >= (3, 7):
def asynccontextmanager(func: Callable[..., AsyncIterator[_T]]) -> Callable[..., AsyncContextManager[_T]]: ...
def asynccontextmanager(func: Callable[..., AsyncGenerator[_T, Any]]) -> Callable[..., AsyncContextManager[_T]]: ...

if sys.version_info < (3,):
def nested(*mgr: ContextManager[Any]) -> ContextManager[Iterable[Any]]: ...
Expand Down